Duracell Coppertop C Batteries, 4 Count, 10-Year Shelf Life, Long-lasting

Customers find these batteries to be of great quality, lasting a very long time, and working well for their intended purpose. They appreciate the brand's reliability and versatility, with one customer noting they're suitable for both everyday and emergency use. While some customers say they'd buy again, others express dissatisfaction with the product. Additionally, several customers report issues with corrosion.